Answer: a
Explanation: In shaper mechanism, nearer the slide block to the center, smaller is the stroke and vice versa. More far the slide block to the center, larger is the stroke.

6. In order to adjust the position of ram, the ram fixing screw is loosened.
a) true
b) falseView Answer

Answer: a
Explanation: When a job is mounted on the table of the shaper, the reciprocation of the ram may not occur over the length of the job properly. In order to adjust the position of ram, the ram fixing screw is loosened, the ram is then moved to the required position and the screw tightened again.

7. The depth of cut is given by raising the tool slide on the tool head.
a) true
b) falseView Answer

Answer: b
Explanation: The depth of cut is given by lowering the tool slide on the tool head. This is done by using hand wheel.

Answer: a
Explanation: As per the feed mechanism of the shaper. Ratchet is a device that allow continuous motion in only one direction and oppose motion in opposite direction.

9. The feed screw of the table rotates through a small angel in a direction _____ to the ram.
a) parallel
b) perpendicular
c) anti-parallel
d) none of the mentionedView Answer

Answer: b
Explanation: As the crank disk keyed to the shaft of Bull gear rotates, the lever oscillates about the fulcrum movement of the lever in the anticlockwise direction results in the pawl engaging with the ratchet wheel and rotating it through a fraction of a rotation. When this happens, the feed screw of the table rotates through a small angel in a direction perpendicular to the ram.